From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 87F0C3793BB; Mon, 27 Apr 2026 22:12:52 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777327972; cv=none; b=LNI7Mwt8YiLXTErZ3nNoZWk2D2DOtmSrHpGVPTRimpsRBm76W21RB2ujPmfeooeZn9po+aC5aZw3FUqtLS+oOFbwElmd2ldREjkwMRprJwnVaWkWA7O2AS+sdz4J6Ah5ZaoOfM/3jYb3Z2YjjtK3hlEk23T+NAq6dYaIGKmoZzw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777327972; c=relaxed/simple; bh=ZL0zZCof376hKMo9gCVpVeB8x9AGCrUGR4sSsGtHfmE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=eNXzx/f/IATUdoCQGba8IUCGKoaX4IXICDxR0v4RXfz/6XGs/pC8OesGvjfdA6RJ48aqfP2UolqcG9pk9i6xxepFHPb43oEULySTCIfBxF8tMHB1+eFN/4B5DY12OGZWJgELqkRqo9Qy3rFqiFvBc9ZpBrN22RpMF9+JFdq2NCs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fhs4XRkL; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fhs4XRkL" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4FDFDC19425; Mon, 27 Apr 2026 22:12:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777327972; bh=ZL0zZCof376hKMo9gCVpVeB8x9AGCrUGR4sSsGtHfmE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fhs4XRkLdj6f/yxZNfHY6NuvcXE6SzB2cRVRxBtKOZ+l1bM47Btenuklj8PnO7Euf khfDpJdzT032Ikvv4at1RhXzxCH+/+1Uvn3f7KoeMRwvTKb+zkfMZUb7u1o/pCbF0d /dEr7ZJPu53xD9cenRMXcnCj8FI+xI+R4kKbUj6YbyPkIH9SsuNQaDDYtB7ifcWCS0 gGzh7PfW+xelHhV9gbUUJTnsKh7Zt0j6wVOd87hRgmZwoLvA/OLNIh+TCTHjl8t+Cx /C5H5XJL/M7py5KzI5XsYcqHQpa4xfxahE7QsRiLg7qI+JtkTIyO5t2GIE48cKwSEh hsBF0GHxBhvdA== From: Danilo Krummrich To: gregkh@linuxfoundation.org, rafael@kernel.org, acourbot@nvidia.com, aliceryhl@google.com, david.m.ertman@intel.com, ira.weiny@intel.com, leon@kernel.org, viresh.kumar@linaro.org, m.wilczynski@samsung.com, ukleinek@kernel.org, bhelgaas@google.com, kwilczynski@kernel.org, abdiel.janulgue@gmail.com, robin.murphy@arm.com, markus.probst@posteo.de, ojeda@kernel.org, boqun@kernel.org, gary@garyguo.net, bjorn3_gh@protonmail.com, lossin@kernel.org, a.hindborg@kernel.org, tmgross@umich.edu Cc: driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, nova-gpu@lists.linux.dev, dri-devel@lists.freedesktop.org, linux-pm@vger.kernel.org, linux-pwm@vger.kernel.org, linux-pci@vger.kernel.org, rust-for-linux@vger.kernel.org, Danilo Krummrich Subject: [PATCH 07/24] rust: platform: implement Sync for Device Date: Tue, 28 Apr 2026 00:11:05 +0200 Message-ID: <20260427221155.2144848-8-dakr@kernel.org> X-Mailer: git-send-email 2.54.0 In-Reply-To: <20260427221155.2144848-1-dakr@kernel.org> References: <20260427221155.2144848-1-dakr@kernel.org> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Device uses the same underlying struct platform_device as Device; Bound is a zero-sized type-state marker that does not affect thread safety. This is needed for drivers to store &'a platform::Device in their HRT private data while remaining Send. Signed-off-by: Danilo Krummrich --- rust/kernel/platform.rs | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/rust/kernel/platform.rs b/rust/kernel/platform.rs index 1585b6a1ac45..ae648304eb5b 100644 --- a/rust/kernel/platform.rs +++ b/rust/kernel/platform.rs @@ -564,3 +564,7 @@ unsafe impl Send for Device {} // SAFETY: `Device` can be shared among threads because all methods of `Device` // (i.e. `Device) are thread safe. unsafe impl Sync for Device {} + +// SAFETY: Same as `Device` -- the underlying `struct platform_device` is the same; +// `Bound` is a zero-sized type-state marker that does not affect thread safety. +unsafe impl Sync for Device {} -- 2.54.0